// Copyright 2020 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package internal

import (
	"regexp"

	"go.chromium.org/luci/common/errors"
)

var realmRe = regexp.MustCompile(`^(\w+)/(\w+)$`)

// ParseRealm returns LUCI project and ID of a realm.
func ParseRealm(realm string) (project, realmID string, err error) {
	match := realmRe.FindStringSubmatch(realm)
	if match == nil {
		return "", "", errors.Reason("realm %q is malformatted", realm).Err()
	}
	return match[1], match[2], nil
}
